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Electronics => Projects, Designs, and Technical Stuff => Topic started by: haseeb zaib on March 28, 2022, 11:13:53 am

Title: Want some ideas related to self test feedback loop for a project
Post by: haseeb zaib on March 28, 2022, 11:13:53 am

Hello guys

I am working on a project, which will have a built-in self-test feature. Now for selftest, all the main components need to have some kind of feedback loop so the microcontroller can know that they are functioning properly. The Components I want to self-test and in which I am confused about how to give a feedback loop to the controller from them components are as follow.

1)12v PUMP
2)FAN
3)High voltage supply (30kv)

now for a pump, I thought about using a flow sensor to see if the water is moving through the loop, but this is an invasive method as this will hinder the flow of water, therefore I am looking for another method.

now for a fan, I am thinking about using the current sensor. My theory is that if something happens to fan or it is malfunctioning the current will surely increase/decrease from its normal values so I would know, but I am still open to suggestions if anyone got a better solution

now for High voltage supply. This high voltage supply is for purpose of air cleaning and its rating is up to 30kv this is the most important component in the project which I have to know before starting the machine that it is working properly. I am open to all suggestions regarding how can I give a feedback loop from this to the microcontroller.

Thank you :slight_smile:

Title: Re: Want some ideas related to self test feedback loop for a project
Post by: Renate on March 28, 2022, 04:16:54 pm

4 wire fans have a tach output (i.e. +12V, PWM, tach, Gnd). Measuring current is much less reliable.
You could use an ozone detector like MIKROE-1630 for the HV.